For me, the complexity of the universe and life are too great for it to be completely chance. Obviously, I don't think of God as some 'Invisible Man in the Sky', or anything like that. Many people debate the concept of God because of time, but many forget that time is but one dimension, and that something can exist outside of it. I really don't claim to know what God's laws are, or what He wants us to do, but as one would think a Creator is benign, you would also think that He would wish his intelligent creations to be the same. Do not impede on others, even if they don't agree with you, etc.,
I also think that the human conscience is so enormously complicated, it can not be destroyed for eternity. However, I am not sure if this leads to an afterlife of pure being of thought, or reincarnation.